<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    <button @click="change">切换显示隐藏</button>
    <h1 v-show="isShow">黑马程序员</h1>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js"></script>
  <script>
    /**
     * 目标:
     *    点击切换 h1 标签显示隐藏
     */
    const app = new Vue({
      el: '#app',
      data: {
        isShow: true
      },
      methods: {
         change() {
          this.isShow = !this.isShow
         }
      }
    })
  </script>
</body>

</html>